#include<stdio.h>
#include<unistd.h>
#include<sys/types.h>
int main()
{
	printf("我是一个进程,pid:%d,ppid:%d\n",getpid(),getppid());
	pid_t id = fork();
	if(id == 0)
	{
		//子进程
		while(1)
		{
			printf("我是子进程,pid:%d,ppid:%d\n",getpid(),getppid());
			sleep(1);
		}
	}
	else if(id>0)
	{
		while(1)
		{
			printf("我是父进程,pid:%d,ppid:%d\n",getpid(),getppid());
			sleep(1);
		}
	}
	else
	{

	}
	//while(1)
	//{
	//	printf("I am a process,my id is:%d,parent:%d\n",getpid(),getppid());
	//	sleep(1);
	//}
	return 0;
}
